Web-port of xscreensaver's Substrate

Recently I started using  Google's Dart language for web development projects.
Not being a fan of JavaScript, Dart has made such projects fun again.
As a warm-up I have ported my favorite xscreensaver, Substrate, to the web.
You can try it out here:

 http://muth.org/Art/substrate.html


It should work on most browsers and systems including mobile devices.